Analysis

  • max time kernel
    16s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    28/11/2020, 11:22

General

  • Target

    5ba337af468de6f90b4c31ff4cef4c45.exe

  • Size

    584KB

  • MD5

    5ba337af468de6f90b4c31ff4cef4c45

  • SHA1

    36d38196dd5867aa472fc80a970abc990524c6f0

  • SHA256

    282d4efd74164b844bf5a0dc437745738f2f48070575d278e83128a09c6929d5

  • SHA512

    aa0cf1972ea4b41ed38b76415fd0bc9c146bc7c9a7e5f33f1a3a77aa9ae25d318834e18738114b19b41570c75201ce7ba2f9bc3d093bfa72398e004a35de912e

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ba337af468de6f90b4c31ff4cef4c45.exe
    "C:\Users\Admin\AppData\Local\Temp\5ba337af468de6f90b4c31ff4cef4c45.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:844
    • C:\Users\Admin\AppData\Local\Temp\5ba337af468de6f90b4c31ff4cef4c45.exe
      "C:\Users\Admin\AppData\Local\Temp\5ba337af468de6f90b4c31ff4cef4c45.exe"
      2⤵
        PID:1336
      • C:\Users\Admin\AppData\Local\Temp\5ba337af468de6f90b4c31ff4cef4c45.exe
        "C:\Users\Admin\AppData\Local\Temp\5ba337af468de6f90b4c31ff4cef4c45.exe"
        2⤵
        • Checks computer location settings
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1352

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/844-2-0x00000000749D0000-0x00000000750BE000-memory.dmp

      Filesize

      6.9MB

    • memory/844-3-0x0000000000020000-0x0000000000021000-memory.dmp

      Filesize

      4KB

    • memory/844-5-0x0000000004B00000-0x0000000004B9E000-memory.dmp

      Filesize

      632KB

    • memory/844-6-0x0000000001E30000-0x0000000001E46000-memory.dmp

      Filesize

      88KB

    • memory/1352-7-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/1352-10-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/1352-9-0x0000000000400000-0x0000000000486000-memory.dmp

      Filesize

      536KB

    • memory/1352-11-0x00000000749D0000-0x00000000750BE000-memory.dmp

      Filesize

      6.9MB